I am currently having an issue with Resonance patch 18.104.22.168 in Fedora Linux 19 in wich i am unable to type the character "/" in antevorta's mainframe terminal during Ray's infiltration sequence. This stops my prograssion since i am unable to use /HELP and /PASSRESET commands.
I had this very problem yesterday. I'm on Arch but I think the solution will work for you.
In my case I have a qwerty keyboard with the "es" layout (in Xorg), the solution was to change temporally the layout to "us"...
In the command line:
$ setxkbmap -layout "us"
(More info about X keyboard configuration here: https://wiki.archlinux.org/index.php/Keyboard_configuration_in_Xorg
- this should work for any linux machine using X)
The " / " symbol can then be typed in the antevorta terminal (in my case by pressing the " - " key)
The layout should go back to your default settings on the next login. You can change it manually to any other layout using the same command, in my case:
$ setxkbmap -layout "es"
Hope this helps!